Hello from Poland, I've just put few Beverage's on my QTH and however they're working fine (I can hear DX signals that are completely absent on other antennas), I wonder if there is still sth I shoul
I shorted the coax center and shield at the bev. feed point (after disconnecting it from the antenna) and found that there are still some signals present on my receiver, even some of them are quite
in others "RG58" Funny thing about shields at LF through VHF. No matter how they look they all seem to work very well. I use single shields no trouble. The RG58 should be fine. this weekend I will m
to myself: "OK, I very simple and ground. Than, both the inner other HAM's. So I've I would never switch a shield Mac. Never! If switching a shield makes a change for the better it means the cables
I will check this, it can be fixed easily if sth is wrong. Here we have a problem. After reading this comment, I said to myself: "OK, I give up". The first switchbox I've built few weeks ago was ver
I have had first hand experience with such a case in my homebrew linear amplifier's antenna change over relay, where I had noise from the mains coupled into the receiver through the relay coil.I not
I find this question very interesting. I've found ON4UN's comments on minimizing common-mode signal leakage, and a number of others (notably John Doty and John Bryant) all advocate the same approach
Larry, I wanted to troubleshoot a "leaky" cable. What I did was connect the coax to a modulated signal generator that operated on the BC band, then I went into the field with a portable radio. I fou
Hi Larry, My shack is also an "elevated" shack on the second floor... I have more than 20m of the feed line that is not buried, beacuse it goes trough whole my house. This was the first point I deci
shack like mine. signals off the the feedline is floor... I have more than trough whole my Having the feedline in the air really doesn't matter unless you already have shield or end connection probl
comments on others (notably towards unbalanced wire The problem is almost always that an antenna is not perfectly unbalanced, even when we call it unbalanced. If the system has a connection path for
GM, After an investigation I did during the weeeknend I still receive some signals on the coax, but there is a lot of improvement. The noise sources were: 1. TX antenna. When my INV Vee is not connec
switchbox with shields together the local 15-18db down! Now the is connected Mac, What you find is exactly what I find in commercial applications and in my own stations. The shields should NEVER be
people say that in this be shorted to the Another bad rumor. Shorting unused ports to ground almost always guarantees maximum cross coupling in a switching matrix. Someplace between an open and shor
-- -- My experience is, this method is the simplest AND most effective. My problems have not been with AM broadcast but with noise sources associated with multi-service communications sites. Simply w
Could you estimate how many dB's are represented by "TOTALLY "? 6, 16, 26? 73, Sinisa _______________________________________________ Topband mailing list Topband@contesting.com http://lists.contesti